molecular/crystal modelling (?)

[Loki Jorgenson Rm421]

	Hey ho....

	Before I re-create the wheel here, does anyone know of a decent,
freeware piece which does ball/sphere-and-rod modelling of molecules
and/or crystals?  We have some crystallography types here who want to
visualize their theoretical models on our 4D/25s.

	By the by, we have 24-bit/Z-buffer on one machine and 8-bit/no-Z
on the other so I would like to know about anything that works on 
either or both.

Thanks,
Regards,
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Loki Jorgenson	            / /\/\/\/\/\/\ \  node:  loki at physics.mcgill.ca
Physics, McGill University < <            > > fax:   (514) 398-3733
Montreal Quebec CANADA	    \ \/\/\/\/\/\/ /  phone: (514) 398-6531
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            <_<  Anatomically incorrect and proud of it >_>